Packing-ring.



- PATENT'ED'MAY 31, 1904.

No. 7 1,593. v

s. B; MACK.

I PACKING RING. APPLIOATION FILED AUG. 23, 1902.

N0 MODEL.

Jnwmko/m i j vUNIT D STATES Patented May 31, 1904.

PATENT I OFFICE.

PACKING-RING- SIPEGIFIGATION forming part of Letters Patent No. 761,593, dated May 31 1904.

Application filed August 23, 1902 Serial No. 120,843. (No model.)

1'0 alt wltom it may concern.-

Be it known that I, SAMUEL B. MACK, a citizen of the United States, residing at St. Paul,

in the county of Ramsey and State of Minne:

sota, have invented certain new and useful Improvements 1n Packmg-Rmgs, of whlch the following is a specification.

My invention relates toimprovements in packing-rings for piston-rods, valve-stems, &c., its object being particularly toeonstruct the ring so that when a series of rings are placed together a tight joint may be secured between the adjacent rings.

To this end my invention consists of the con-- struction hereinafter particularly described and claimed. v

In the-accompanying drawing, forming part of this specification, Figure 1 shows a series of'my' packing-rings surrounding a piston-rod,

the rings being partly broken away. Fig. 2

V-shaped groove 2 in its lower side and a correspondingly-shaped rib 3 upon its upper side. The ribs and grooves 2 and 3 are intermediate of the inner and outer sides of the ring I .and preferably nearer to the outer than the inner side, as shown in Fig. 1.

In Figs. 3 and 4 I show a modified form of packmg-rmg deslgned for use with a valvestem. The rings C are formed with grooves and ribs corresponding to the grooves and ribs 2 and 3 of the packing-rings B.

By having the ribs and grooves V-shaped and intermediate of the outer and inner faces of the rings a contact will be formed by the sharp point of the rib, even though there may be some irregularity in the surfaces of the rings, and the ribs will be protected from in- J y- Having now described my invention, what I claim as new, anddesire to secure by Letters Patent, is

f The combination of a series of packingrlngs, each inslde rlng belng formed upon one of its contacting faces with a V-shaped groove arranged some distance 1ns1de the outer and inner walls of the rings, the opposite contacting faces of the rings being formed with a V- shaped rib of a size and shape to completely fill the corresponding groove when the rings are brought together, the contacting faces of the rings upon the sides of said rib or groove being fiat to allow said rings to be closely fitted together.

In testimony whereof I afiix my signature in presence of two witnesses.

SAMUEL B. MACK.-

Witnesses:

H. S. JOHNSON, EMILY EAST AN OTIS. 

